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Change in cervical posture after maxillary protraction with facemask therapy: A retrospective study
Deepak Singh1, Vipul K Sharma1, Mahesh Khairnar2
1Department of Orthodontics, IMS BHU, Varanasi, Uttar Pradesh, India.
National Journal of Maxillofacial Surgery
|June 13, 2025
Summary
Rapid maxillary expansion (RME) and facemask therapy improve skeletal class III malocclusion in growing patients. This treatment also leads to a forward inclination of the craniocervical posture and significant changes in the upper cervical vertebrae.
Area of Science:
- Orthodontics and Dentofacial Orthopedics
- Craniofacial Growth and Development
Background:
- Skeletal class III malocclusion presents a significant challenge in growing patients.
- Early intervention with Rapid Maxillary Expansion (RME) and facemask therapy is a common treatment approach.
Purpose of the Study:
- To evaluate the effects of RME and facemask therapy on the cervical vertebral column in growing patients with skeletal class III malocclusion.
- To assess changes in maxillomandibular sagittal relationships and craniocervical posture.
Main Methods:
- Cephalometric analysis of 18 growing patients (mean age 9.47 years) before and after RME and facemask therapy.
- Assessment of sagittal, vertical, and cervical vertebral parameters using statistical tests including Shapiro-Wilk, Levene's, and paired t-tests.
Main Results:
- Significant improvements were observed in maxillomandibular sagittal relationships (SNA, SNB, ANB angles).
- A significant forward inclination of craniocervical posture was noted.
- Two upper cervical vertebral parameters (SN-OPT and MP-OPT) showed statistically significant differences.
Conclusions:
- RME and facemask therapy effectively improve the maxillomandibular sagittal skeletal relationship in growing class III patients.
- The therapy results in a forward inclination of craniocervical posture.
- The upper cervical vertebral column, specifically the SN-OPT parameter, demonstrates highly significant improvement.
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